Sergey Nikolayevich Seleznev, Suwon-Si KR

Sergey Nikolayevich Seleznev, Suwon-Si KR

Patent application number

Description

Published

20090252324

METHOD AND APPARATUS FOR PROVIDING BROADCAST SERVICE USING ENCRYPTION KEY IN A COMMUNICATION SYSTEM - A method and apparatus for providing a broadcast service in a communication system is provided. The method includes creating a seed key pair including a first key and a second key, transmitting the seed key pair to a terminal to which the broadcast service is to be provided, creating a certain number of encryption keys using the seed key pair, the certain number corresponding to a lifetime of the seed key pair, encrypting broadcast service data for the lifetime using the encryption keys, and broadcasting the encrypted broadcast service data.

10-08-2009

20090254983

METHOD AND APPARATUS FOR MANAGING TOKENS FOR DIGITAL RIGHTS MANAGEMENT - A method and apparatus for managing tokens for Digital Rights Management (DRM) in a terminal are provided. In the method, at least one token is acquired from a Rights Issuer (RI), and the token is moved to a Secure Removable Media (SRM) through a token move request message. The token can be shared by several terminals.

10-08-2009

20110203002

METHOD FOR PROTECTING PERSONAL INFORMATION IN AUDIENCE MEASUREMENT OF DIGITAL BROADCASTING SYSTEM - A method for protecting personal information in Audience Measurement (AM) of a digital broadcasting system is provided, including inserting an indicator, which notifies whether a consumption pattern of a service or content provided by a service provider can be measured, into a service guide, to which the information of the service or content is provided by a service provider; and determining whether the AM can be executed for the service or content in accordance with the indicator when the AM function is implemented in a terminal.

08-18-2011

20110225422

METHOD AND APPARATUS FOR REPORTING AUDIENCE MEASUREMENT IN CONTENT TRANSMISSION SYSTEM - A method and apparatus for reporting a consumption time of a service or content in Audience Measurement (AM), which measures a user consumption pattern of the service or the content is provided. A method for reporting a consumption time of the service or the content in a terminal of a content transmission system includes receiving an encryption key for encrypting the service or the content from a broadcasting server and transmitting a message requesting interpretation of the encryption key to a smart card. The message includes consumption time information of the service or the content.

09-15-2011

20110231567

METHOD AND APPARATUS FOR CONTROLLING CONTENT PLAYBACK IN CONTENT DELIVERY SYSTEM - A method is provided for controlling content playback by a terminal in a content delivery system. The method includes receiving streaming content from a service provider, the streaming content including zone information of each zone and an associated identifier of each zone for identifying a terminal's operation mode, determining the terminal's operation mode depending on the identifier, and controlling playback of the streaming content in a zone corresponding to the zone information according to the determined operation mode.

09-22-2011

20120023594

METHOD AND APPARATUS FOR MANAGING CONSUMPTION RIGHT FOR MULTIMEDIA SERVICE - Disclosed is a method and an apparatus for managing a consumption right for each stage for a service including a plurality of stages or episodes. The right issuer includes the access condition, which allows an access to the Right Object (RO) for each stage, in the right object representing the consumption right for the stepped multimedia service and then transfers the right object to the device. When the stepped multimedia service is executed, the device obtains the access information satisfying the access condition corresponding to a corresponding stage from the right issuer or a service provider and then transfers the access information to the RO, allowing a user to access the RO and execute a service of the corresponding stage by using the RO.

01-26-2012

20120284797

DRM SERVICE PROVIDING METHOD, APPARATUS AND DRM SERVICE RECEIVING METHOD IN USER TERMINAL - Disclosed is a DRM Proxy Server Agent (DRM PSA), which converts a format of a DRM system into a format recognizable in a user terminal when the user terminal and a service provider do not use the same type of DRM system. The user terminal downloads the DRM PSA from the service provider and installs the DRM PSA in the user terminal. Through the download and installation of the DRM PSA, the user terminal can use various DRM systems provided by the service provider regardless of the type of DRM system installed in the user terminal.

11-08-2012

20120291142

METHOD AND APPARATUS FOR PROVIDING DRM SERVICE - Methods and apparatus are provided for providing a DRM service by a user terminal apparatus consuming DRM content in a service environment that provides the DRM content using a plurality of incompatible DRM systems. A license corresponding to the DRM content is acquired from a service providing apparatus that provides the DRM content. It is determined whether the license is a common license having a common DRM interface format. The common DRM interface format of the common license is converted to a format of a first DRM system installed in the user terminal apparatus, when the license is the common license. The license having the format of the first DRM system is applied in reproducing the DRM content. The common license is provided from the service providing apparatus to the user terminal apparatus through a common DRM interface when the service providing apparatus does not support the first DRM system.

11-15-2012

20130024701

METHOD AND SYSTEM FOR MANAGING AN ENCRYPTION KEY FOR A BROADCASTING SERVICE - A system and method for managing an encryption key are provided, which include receiving, from a DRM agent, an RO request message for receiving content; generating a KSP including a first key and a second key; applying hash chains with different directions to the first key and to the second key to generate an encryption key for the content; and transmitting, to the DRM agent, a response message including a context element having an identifier of the content and a key information element. The key information element includes a first encryption key element; a rights encryption key information element; and an encryption data element.

01-24-2013

20130024890

APPARATUS AND METHOD FOR THE COMPULSORY VIEWING OF ADVERTISEMENTS - An apparatus and method for the compulsory viewing of advertisements in conjunction with a DRM technique for protecting a multimedia service by obligating a user to view advertisements on the device of the user includes, upon receipt of a request for the provision of content, determining whether or not information on compulsory advertisement viewing is included in a rights object for the requested content, if information on compulsory advertisement viewing is included, detecting the advertisement relevant to the requested content, playing the detected advertisement for a predetermined compulsory playback time, and providing the requested content upon the completion of the playback of the advertisement.

01-24-2013

20130030906

METHOD AND APPARATUS FOR PROVIDING A SERVICE IN ACCORDANCE WITH THE VIEWING OF AN ADVERTISEMENT USING DRM - Methods and apparatus for providing a multimedia service are provided. A first request message is transmitted from the device to a rights issuer requesting a first right object required to execute an advertisement. A first request response message having the first right object is transmitted from the rights issuer to the device. The advertisement is executed at the device using the first right object. A report message having an advertisement consumption specification is transmitted from the device based on execution of the advertisement. A report response message having an advertisement consumption certificate is received at the device. A second request message is transmitted from the device to the rights issuer requesting a second right object required to execute the content. A second request response message having the second right object is transmitted from the rights issuer to the device, when the second request message includes the advertisement consumption certificate.

01-31-2013

20130101118

METHOD AND APPARATUS FOR PROVIDING BROADCAST SERVICE USING ENCRYPTION KEY IN A COMMUNICATION SYSTEM - A method and apparatus for providing a broadcast service in a communication system is provided. The method includes generating a key pair comprising a first key and a second key, generating at least one of forward encryption keys by applying a forward hash chain to the first key, generating at least one of reverse encryption keys by applying a reverse hash chain to the second key, generating at least one of encryption keys using the at least one of forward encryption keys and the at least one of reverse encryption keys, encrypting broadcast service data using the at least one of encryption keys, and broadcasting the encrypted broadcast service data.